CN218013716U

CN218013716U - Processing apparatus for processing workpieces

Info

Publication number: CN218013716U
Application number: CN202220470932.2U
Authority: CN
Inventors: E·布鲁姆; 马里奥·赖伯; 米夏埃尔·金塞斯
Original assignee: Duerr Systems AG
Current assignee: Duerr Systems AG
Priority date: 2021-03-08
Filing date: 2022-03-07
Publication date: 2022-12-13
Anticipated expiration: 2032-03-07
Also published as: DE102021202216A1; DE112022001438A5; EP4304960A1; CN115041354A; WO2022188924A1

Abstract

The utility model relates to a treatment facility for handling work piece. In order to achieve a processing device for processing workpieces, in particular vehicle bodies, which is constructed in a simple and compact manner and enables efficient workpiece processing, the invention provides that the processing device comprises: a processing chamber in which a workpiece can be processed; a transport device by means of which the workpieces can be transported through the process chamber, wherein the transport device comprises one or more workpiece holders for receiving one or more workpieces, respectively; guide means for influencing the rotational orientation of the one or more workpiece holders, wherein the one or more workpiece holders can be rotated about an axis of rotation together with one or more workpieces arranged thereon by means of the guide means.

Description

Processing apparatus for processing workpieces

Technical Field

The present invention relates to a treatment device for treating workpieces, in particular a coating device for coating vehicle bodies. Such coating apparatus is in particular a dip coating apparatus.

Background

A treatment plant is known, for example, from DE 10 2007 031 822 A1.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a treatment facility, this treatment facility constructs and can realize efficient work piece processing with simple and compact mode.

This object is achieved according to the invention by a treatment device according to the following.

A treatment plant for treating workpieces, in particular vehicle bodies, is provided, in particular a painting plant, for example a dip-coating plant.

The processing apparatus preferably comprises:

a process chamber in which a workpiece can be processed;

a transport device by means of which the workpieces can be transported through the process chamber, wherein the transport device comprises one or more workpiece holders for receiving one or more workpieces, respectively; and/or

Guide means for influencing the rotational orientation of the one or more workpiece holders, wherein the one or more workpiece holders can be rotated about an axis of rotation together with one or more workpieces arranged thereon by means of the guide means.

The transport device preferably comprises one or more rotary shafts, at which the workpiece holders are arranged in each case.

The one or more rotary shafts are preferably arranged substantially horizontally and/or transversely, in particular substantially perpendicularly, to the transport direction.

Preferably, the plurality of rotating shafts are arranged in sequence along the transport direction.

The workpiece holding portion is disposed at the rotation axis, particularly, at the intermediate portion of the rotation axis, particularly, in a manner preventing relative rotation. The workpiece holder can thus be rotated about the axis of rotation together with one or more workpieces arranged thereon by rotation of the rotary shaft, in particular of the central part of the rotary shaft.

The axis of rotation is in particular the longitudinal mid-axis of the rotary shaft, in particular the middle part of the rotary shaft.

The central section of the rotational axis is in particular designed as a polygonal axis, for example as a hexagonal axis, or comprises such a polygonal axis. The workpiece holder can thereby be fixed in a particularly reliable and stable manner against relative rotation.

It may be advantageous if one or more of the rotary shafts each have two end regions facing away from one another, in particular on both sides of the central section of the respective rotary shaft.

The transport device preferably comprises two transport units per rotary shaft, each rotary shaft being supported at its end regions facing away from each other by means of the transport units so as to be able to travel in the transport direction.

Each transport unit serves in particular here to absorb the weight of the rotary shaft with the other elements and/or workpieces arranged there.

The transport unit is guided in particular in a downwardly supported manner in the direction of gravity. Alternatively, a suspended guide of the transport unit can be provided for this purpose.

Preferably, provision can be made for the guide means to be arranged at only one end region of each rotary shaft.

The guide means can therefore preferably only influence the rotational orientation of the rotary shafts and/or of the workpiece holders arranged there on one side from one of the end regions of each rotary shaft.

Each rotary shaft is preferably drivable in the transport direction by means of two transport elements of the transport device at two end regions of the rotary shaft facing away from each other. The transport elements are therefore preferably used not only for supporting and/or passive guidance of the respective rotary shaft, but rather for active, driven transport.

Advantageously, each of the rotary shafts comprises a first end region and a second end region arranged facing away from the first end region.

An intermediate part is arranged in particular between the first end region and the second end region.

At the first end region, preferably both a transport unit of the transport device is arranged for driving the rotary shaft in the transport direction and a guide device is arranged for influencing the rotational orientation of the rotary shaft and/or of the workpiece holder. At the second end region, a further transport unit of the transport device is preferably arranged for driving the rotary shaft in the transport direction, preferably only the further transport unit of the transport device is arranged for driving the rotary shaft in the transport direction.

Preferably, therefore, no component of the guide device is arranged at the second end region. Rather, the component in the region of the second end serves only for transporting the rotary shaft in the transport direction and for rotatably supporting the rotary shaft without it being possible for the rotational orientation to be influenced.

Advantageously, the end regions of the rotational axis facing away from each other can be guided out of the treatment chamber and into an outer chamber adjoining the treatment chamber.

Preferably, at least one of the outer chambers is accessible from the treatment chamber, in particular through one or more separating elements.

The separating element or elements are in particular arranged in a tool-free manner, for example suspended or clamped (festgeclipst), at a separating wall which separates the treatment chamber from the outer chamber.

The one or more separating elements are in particular arranged directly or can be arranged above the axis of rotation, so that the axis of rotation can be transported in the transport direction below the separating elements.

Alternatively or additionally, it can be provided that the one or more separating elements are displaceably mounted, in particular in order to be able to access the outer region from the process chamber. In this case, the separating element is in particular designed as a sliding door, which is guided, for example, in a suspended manner.

An outer chamber accessible from the treatment chamber is preferably arranged in the region of the second end of each rotary shaft. The second end region of each rotary shaft projects in particular into an outer chamber which is accessible from the treatment chamber.

It may be advantageous if the transport device comprises two transport elements which are arranged at end regions of one or more axes of rotation of the transport device which face away from one another and/or extend parallel to one another and/or at least partially parallel to the transport direction.

It can be provided that one or both of the transport elements are designed as a transport chain.

It can also be provided that one or both of the transport elements are configured as ropes or other pulling elements and/or pushing elements.

The transport elements preferably have different dimensions, in particular are configured distinctly differently. For example, it may be provided that a transport element is arranged in the second end region of the rotational shaft, the maximum tensile force of which is less than the maximum tensile force of the transport element in the first end region of the rotational shaft.

The transport element can be guided on one side below the axis of rotation of the rotary shaft, in particular with respect to a section of the transport path of the transport device in which the workpieces are transported by means of the workpiece holders. Alternatively, it can be provided that, in particular when the rotary shaft is mounted in a suspended manner, the axis of rotation of the rotary shaft extends below the transport element, in particular with respect to a section of the transport path of the transport device in which the workpieces are transported by means of the workpiece holders.

Preferably, the transport elements can be driven by means of a common drive unit. Alternatively, it can be provided that each transport element is assigned a separate drive unit for driving it.

It may be advantageous if the transport device comprises a synchronization device for synchronizing the movement of the two transport elements.

The synchronization device preferably comprises a compensation device for compensating for a changing tension of the two transport elements, in particular for compensating for a changing tension of the two transport elements caused by load and/or wear.

In particular, if the transport element is configured in a distinctly different manner and/or has a varying maximum tensile load and/or is provided with a guide only on one side, different loads and different wear at the transport element can result, as a result of which varying tensions of the transport element can occur during operation of the treatment device. The varying stretching can preferably be compensated for by means of the compensation device.

The compensating device comprises, for example, one or more tensioning devices, by means of which the transport element can be tensioned, in particular as a function of forces caused by the transport in the transport direction and by the influence of the rotational orientation.

Preferably, the tensioning device or devices enable the tensioning of each transport element itself individually, in particular by means of matching tensioning weights.

A uniform chain stretching can preferably be achieved by means of one or more tensioning devices.

The tensioning device comprises in particular a tensioning weight which acts by means of a pulling element on a guide wheel for guiding and steering the transport element. The guide wheel is preferably supported by means of a support element, in particular in a horizontally displaceable manner. Preferably, the pulling element is guided and steered via one or more steering rollers, so that a pulling force is exerted on the guiding wheel in the horizontal direction via the pulling element by means of the tensioning weight. This allows the transport element guided on the guide wheels to be tensioned. In addition to the displaceably mounted guide wheels, a plurality of, in particular three, non-displaceable guide wheels for guiding and steering the transport element can be provided.

In particular, two or three non-displaceable guide wheels and two or one displaceable guide wheel are provided for each transport element.

In particular when differently configured and/or differently dimensioned and/or differently designed transport elements are used, it can be advantageous if a tensioning device is provided for each transport element, wherein the tensioning weight of each tensioning device is adapted to the respective transport element. In particular, different sizes of tensioning weights are provided for the two transport elements.

It may be advantageous if the compensation device comprises a measuring device for ascertaining a change in length of one or both transport elements.

For example, it can be provided that one or more tensioning devices are each associated with one or more measuring devices in order to measure and/or control the stretching of the respective transport element, in particular of both transport elements, wherein preferably by means of the measuring devices, in particular by suitable triggering (ansueving) and/or adjustment, the tensioning device or devices can be acted upon in such a way that different degrees of stretching of the transport elements can be compensated and/or avoided.

The securing device of the compensating device can in particular detect and/or prevent or reduce an undesired sudden movement of the bearing element and the guide wheel mounted thereon. The securing device comprises for this purpose, in particular, a detection device for detecting an abnormal movement of the supporting element. The detection device comprises in particular one or more proximity sensors for the positional control of the support element.

In a further embodiment of the invention, it can be provided that one or more transport elements are arranged in a movable manner in the guide profile, for example in a transport chain guide. The guide profile, in particular the conveyor chain guide, is, for example, an upwardly open U-shaped profile.

In particular, to avoid contamination of the respective transport element and/or the respective guide profile, it can be provided that the upwardly open upper side of the guide profile is provided at least partially and/or partially with a protective element, for example a splash shield, which is partially covered. The protective element protrudes in particular over a part of each transport element, for example in order to protect a support roller of a transport element configured as a transport chain.

The utility model discloses still relate to a method for handling the work piece.

In view of this, it is an object of the invention to provide a method which enables efficient workpiece processing when using a processing apparatus of simple and compact construction.

According to the invention, this object is achieved by the following features.

The method comprises in particular:

transporting the workpiece through the process chamber by means of a transport device, wherein the workpiece is received by means of the workpiece holder;

the rotational orientation of the workpiece holder and the workpiece arranged there about the axis of rotation is influenced by means of the guide device.

The method according to the present invention preferably has one or more of the features and/or advantages described in connection with the processing device.

Furthermore, the processing device may preferably have one or more of the features and/or advantages described in connection with the method.

It can be advantageous if the workpiece holders are arranged at rotary shafts which are mounted in a movable manner at end regions facing away from one another, wherein the guide means for influencing the rotational orientation engage with one of the end regions of each rotary shaft only on one side.

Alternatively or additionally, it may be provided that the workpiece holder is arranged on a rotary shaft which is mounted in a movable manner at end regions facing away from one another, wherein the rotary shaft is moved by means of the two transport elements in the transport direction, wherein the movement of the two transport elements is synchronized by means of a synchronization device, and wherein the load-induced and/or wear-induced varying tensions of the two transport elements are compensated by means of a compensation device, in particular individually for each of the transport elements.

Drawings

The drawings and the following description of the embodiments describe other preferred features and/or advantages of the invention.

In the drawings:

fig. 1 shows a schematic vertical cross-section of a treatment apparatus;

FIG. 2 shows an enlarged view of the rotary shaft of the processing apparatus of FIG. 1 and the workpiece holder arranged there, with components around the processing apparatus shown;

FIG. 3 shows an isolated view of the rotary shaft and the workpiece holder of the transport device of the processing apparatus of FIG. 1 together with other components;

fig. 4 shows an enlarged view of the region IV in fig. 3;

fig. 5 shows a schematic perspective view of an end region of a rotating shaft of a processing device together with surrounding components;

fig. 6 shows an enlarged view of the region VI in fig. 5;

fig. 7 shows another perspective view of the rotary shaft together with an assembly of guiding means for changing the rotational orientation of the rotary shaft;

fig. 8 shows a schematic top view of an end region of the rotary shaft and a transport unit for transporting it in a transport direction; and

fig. 9 shows a schematic side view of a compensating device of the transport device.

Identical or functionally equivalent elements have the same reference numerals in all the figures.

Detailed Description

The treatment plant for the surface treatment of a vehicle body 102, indicated as a whole by 100 in fig. 1 to 9, comprises a treatment chamber 106, which is surrounded by a rail 104 and through which the vehicle body 102 can be transported in a transport direction 110 by means of a transport device, indicated as a whole by 108.

The transport device 108 comprises a plurality of workpiece holders 112 arranged one behind the other in the transport direction 110, each of which is arranged on a rotary shaft 116 which is rotatable about a rotary axis 114 oriented substantially horizontally and perpendicularly to the transport direction 110.

A bracket 118 of the respective workpiece holder 112 is fastened to the pivot axis 116 and supports a clamping device 120, by means of which the vehicle body 102 can be releasably locked to the workpiece holder 112.

End regions 122 of the rotating shaft, which preferably have a smaller diameter at least in some regions than the central section 119 of the rotating shaft 116, extend through the sealing device 124 from the treatment chamber 106 into the outer chamber 123. One of the end regions 122 on the end side supports a guide 125, in particular a guide frame, which is connected to the rotational axis 116 in a manner preventing relative rotation and is, for example, of substantially rectangular design (see fig. 7).

The guide 125 is preferably a component of the guide 121, by means of which the rotational orientation of the workpiece arranged on the workpiece holder 112 can be influenced, in particular manipulated.

At two or more, for example four corner regions 127 of the guide 125, guide elements 126, for example guide rollers 128, are preferably arranged.

The guide element 126 is preferably held at the guide 125 in a manner rotatable about a rotation axis extending substantially horizontally and/or substantially perpendicularly to the transport direction 110, respectively.

The guide element 126 preferably interacts with a guide element rail 130, which extends, for example, along the transport direction 110 on the side of the treatment chamber 106, in particular about the rotational axis 116, and thus holds the vehicle body 102 held at the workpiece holder 112 in a predefined rotational position (rotational orientation) about the rotational axis 114. Further details of a guide device 121 of this type are known, for example, from DE 10 2007 031 822 A1.

For example, one or more of the substantially horizontal guide element rails 130, in particular all guide element rails, are preferably each designed as a U-shaped profile which is open toward the guide 125 of the workpiece holder 112 and has an upper horizontal leg, a lower horizontal leg and a vertical web which connects the two legs to one another.

Preferably, the guide rollers 128 engage correspondingly into the interior of the horizontal guide element rail 130 between the two horizontal legs and roll, for example, on the upper side of the lower horizontal leg, which in particular forms a horizontal guide surface.

The transport device 108 also comprises one or two guide profiles 132, which respectively preferably comprise a profile extending in the transport direction 110, U-shaped in cross section and/or open upwards.

Preferably, the support rollers 134 of one or two transport elements 135, for example of one or two transport chains 136, which consist of chain links connected to one another in succession, for example in an articulated manner, in the longitudinal direction of the transport chain 136 (see in particular fig. 5), roll on and/or in the guide profile 132, wherein the support rollers 134 are preferably rotatably supported at several of the chain links.

The transport chain 136 is preferably driven by means of a drive (not shown) on and/or in the guide profile 132 for continuous or intermittent movement in the transport direction 110. The transport chain 136 is in particular designed to be closed in a loop and is guided back outside, in particular below, the guide profile 132 counter to the transport direction 110.

In the treatment chamber 106 of the device 100, a plurality of treatment cells 138, which are each filled with a treatment fluid, for example a painting fluid or a pretreatment fluid (see fig. 1), are preferably arranged one after the other in the transport direction 110.

The rotary shaft 116 and thus also the workpiece holder 112 and the vehicle body 102 arranged there can be transported through the treatment chamber 106 along the transport direction 110 by means of a transport chain 136, wherein the workpiece holder 112 together with the vehicle body 102 arranged there can be rotated by means of the guide device 121, in particular by means of a properly oriented guide element rail 130, at a predefined position along the transport direction 110. The vehicle body 102 can thus be brought into the treatment basin 138 and removed therefrom.

In the embodiment of the processing device known from DE 10 2007 031 822 A1, the workpiece holder is rotated together with the vehicle body arranged there, in that a guide device with an associated guide piece and an associated guide element rail is provided on both sides, i.e. in each case in the region of the two ends of the axis of rotation. This has hitherto been considered necessary to achieve a uniform force loading on both sides of the rotating shaft.

Instead, it has now been found that a one-sided arrangement of the guide means may be sufficient.

As can be gathered in particular from fig. 1 to 3, in the presently illustrated embodiment of the processing device 100, it is provided that the first end region 122a and the second end region 122b of the rotational axis 116 are configured functionally differently.

In the first end region 122a, a transport unit 140 of the transport device 108 is arranged. Such a transport unit 140 is also arranged in the second end region 122 b.

The rotary shaft 116 is mounted so as to be rotatable about the axis of rotation 114 by means of two transport units 140. Further, the rotation shaft 116 can be moved in the transport direction 110 by driving the transport unit 140.

Each transport unit 140 is connected to an associated transport chain 136 forming a transport element 135.

Furthermore, a guide 121 is arranged in the first end region 122 a. In particular, the guide 125 is fixed in the first end region 122a at the rotational axis 116, in order to be able to influence the rotational orientation of the rotational axis 116 together with the workpiece holder 112 and ultimately of the workpiece arranged thereon.

No components of the guide 121 are provided in the second end region 122 b.

The space requirement of the processing device 100 can be reduced on one side by the simplified design in the second end region 122 b. Furthermore, maintenance costs in the second end region 122b may preferably be minimized.

Since in this embodiment forces influencing the rotational orientation occur only on one side of the rotational axis 116, different loads are generated at the two transport elements 135, in particular the transport chain 136, for transporting the rotational axis 116. This may result in different degrees of stretching of the transport element 135, which in turn may result in undesirable damage to the process.

Therefore, the processing apparatus 100 preferably comprises a compensation means 142 (see fig. 9). The compensating device 142 is arranged in particular at the lower turning point of the transport element 135.

The degree of tightness of the transport element 135 can be varied, in particular, by means of the compensating device 142 in order to compensate for the length change.

The compensating device 142 comprises for this purpose, in particular, one or more tensioning devices 144 (see fig. 9). The tensioning device 144 comprises in particular a tensioning weight 146, which acts by means of a pulling element 162 on a guide wheel 164 for guiding and steering the transport element 135. The guide wheel 164 is supported, in particular, in a horizontally displaceable manner by means of a support element 166. The tension element 162 is preferably guided and deflected via one or more deflection rollers 160, so that the guide wheels 164 can be tensioned in the horizontal direction via the tension element 162 by means of the tensioning weight 146. Thereby, the transport element 135 guided at the guide wheels 164 (not shown in fig. 9) can be tensioned.

The securing device 168 can detect and/or prevent or reduce an undesired sudden displacement of the supporting element 166 and the guide wheel 164 supported there. For this purpose, the securing device 168 comprises, in particular, a detection device 170 for detecting an abnormal movement of the supporting element 166. The detection device 170 comprises, in particular, one or more proximity sensors for controlling the position of the support element 166.

Finally, it can also be provided that the processing device 100 comprises a measuring device, by means of which the change in length of the transport element 135 can be ascertained, in particular in order to be able to compensate for the changing stretching of the transport element 135.

For this purpose, the measuring device is coupled to a tensioning device 144 of the compensating device 142, in particular by data technology.

Another aspect of the present invention is the simple accessibility of the outer chamber 123 at the second end region 122 b.

As can be gathered, in particular, from fig. 5, the separating wall 148 separating the treatment chamber 106 from the outer chamber 123 is formed, for example, at least in some regions by a plurality of separating elements 150, which are arranged, in particular, in a movable and/or releasable manner. The separating element 150 is, for example, plate-shaped and is suspended at its upper end in order to achieve a separation between the treatment chamber 106 and the outer chamber 123.

In order to access the second end region 122b, for example the transport unit 140, for maintenance purposes, the separating element 150 can be removed or pushed to the side, for example, so that access to the outside of the treatment chamber 106 is possible. In which case a separate entrance from the outside of the treatment device 100 may preferably be omitted. In particular, a separate maintenance area for access by personnel does not have to be reserved on the side of the outer chamber 123 facing away from the treatment chamber 106.

As already indicated in fig. 2, the end region 122 is guided through a sealing device 124, which serves, for example, as a labyrinth seal. In particular, it can be avoided thereby that splashed water or other dirt from the treatment chamber 106 reaches the transport unit 140, the transport element 135 and/or the guide device 121.

In particular, in a very compact design of the treatment device 100, it can be provided that the sealing device 124 is also of compact design at least in the second end region 122 b.

However, this compact design may increase the probability of contamination of the transport element 135 and/or of the guide profile 132.

For improved protection of these components, a protective element 152, for example a splash guard 154, is therefore preferably provided, which projects at least in regions out of the interior of the guide profile 132 and thus protects in particular the associated transport element 135 (see in particular fig. 8).

In the case of liquids still reaching the guide profile 132, a liquid outlet can be provided in the guide profile 132 and/or the outer chamber 123.

As can finally also be gathered from fig. 8, a simple correction of the guide profile 132 can preferably be carried out by appropriately fixing it.

For this purpose, a reinforcing element, for example in the form of a C-shaped handle 156, is provided, which, together with a retaining element 158 fixed to the wall, makes possible a simple correction of the guide profile 132 in the vertical and horizontal directions.

By arranging the guide means 121 on only one side, the entire structure in the second end region 122b can be designed to withstand smaller forces, whereby preferably a simpler structure and easier maintenance can be achieved.

In the (not shown) embodiment of the second end region 122b, for example, a chain as transport element 135 can even be dispensed with, if the forces which accumulate for transport along the transport direction 110 can already be taken up and transmitted, for example, by means of a rope or a wire.

Description of the reference numerals

100. Processing apparatus

102. Vehicle body

104. Fence (CN)

106. Treatment chamber

108. Transport device

110. Direction of transport

112. Workpiece holding part

114. Axis of rotation

116. Rotating shaft

118. Support frame

119. Middle part

120. Clamping device

121. Guiding device

122a first end region

122b second end region

123. Outer cavity

124. Sealing device

125. Guide piece

126. Guide element

127. Corner region

128. Guide roller

130. Guide element guide rail

132. Guide profile

134. Supporting roller

135. Transport element

136. Conveying chain

138. Treatment tank

140. Transport unit

142. Compensation device

144. Tightening device

146. Tightening balance weight

148. Partition wall

150. Separating element

152. Protective element

154. Splash shield

156 C-shaped handle

158. Retaining element

160. Steering roller

162. Traction element

164. Guide wheel

166. Supporting element

168. Safety device

170. And (4) a detection device.

Claims

1. A processing apparatus for processing a workpiece, characterized in that the processing apparatus (100) comprises:

a process chamber (106) in which the workpiece can be processed;

a transport device (108) by means of which the workpieces can be transported through the process chamber (106), wherein the transport device (108) comprises one or more workpiece holders (112) for receiving one or more workpieces, respectively;

a guide device (121) for influencing the rotational orientation of one or more workpiece holders (112), wherein the one or more workpiece holders (112) can be rotated about a rotational axis (114) together with one or more workpieces arranged thereon by means of the guide device (121).

2. The processing apparatus (100) according to claim 1, wherein the workpiece is a vehicle body (102).

3. The processing apparatus (100) according to claim 1 or 2, characterized in that the transport device (108) comprises one or more rotational axes (116) at which the workpiece holders (112) are respectively arranged, wherein the one or more rotational axes (116) are arranged substantially horizontally and/or transversely to the transport direction.

4. The processing apparatus (100) according to claim 3, wherein the one or more rotation axes (116) are arranged substantially perpendicular to the transport direction (110).

5. The processing apparatus (100) according to claim 3, characterized in that the one or more rotary shafts (116) each have an end region (122) facing away from one another, and the transport device (108) comprises two transport units (140) per rotary shaft (116), by means of which transport units each rotary shaft (116) is supported at its end region (122) facing away from one another so as to be travelable in the transport direction (110).

6. Treatment apparatus (100) according to claim 3, wherein the guiding means (121) are arranged at only one end region (122) of each rotation shaft (116).

7. The processing apparatus (100) according to claim 3, characterized in that each rotary shaft (116) is drivable in the transport direction (110) by means of two transport elements (135) of the transport device (108) at two end regions (122) of the rotary shaft facing away from one another.

8. The processing apparatus (100) according to claim 3, wherein each rotary shaft (116) comprises a first end region (122 a) and a second end region (122 b) arranged away from the first end region (122 a), wherein both a transport unit (140) of the transport device (108) is arranged at the first end region (122 a) for driving the rotary shaft (116) in the transport direction (110) and the guide device (121) is arranged for influencing the rotational orientation of the rotary shaft (116), and wherein only a further transport unit (140) of the transport device (108) is arranged at the second end region (122 b) for driving the rotary shaft (116) in the transport direction (110).

9. The treatment apparatus (100) according to claim 3, characterized in that end regions (122) of the rotational axis (116) facing away from each other are guided out of the treatment chamber (106) and into an outer chamber (123) adjoining the treatment chamber (106), wherein at least one of the outer chambers (123) is accessible from the treatment chamber (106).

10. The treatment apparatus (100) according to claim 9, wherein at least one of the outer chambers (123) is accessible from the treatment chamber (106) through one or more separation elements (150).

11. The processing apparatus (100) according to claim 3, characterized in that the transport device (108) comprises two transport elements (135) which are arranged at end regions (122) of one or more rotational axes (116) of the transport device (108) which face away from one another and/or extend parallel to one another and/or at least partially parallel to the transport direction (110).

12. The processing apparatus (100) according to claim 11, wherein the transport element is a transport chain (136).

13. The processing plant (100) according to claim 11, wherein the transport means (108) comprise synchronization means for synchronizing the movement of the two transport elements (135), wherein the synchronization means comprise compensation means (142) for compensating for load-induced and/or wear-induced varying tensions of the two transport elements (135).

14. The processing apparatus (100) according to claim 13, characterized in that the compensation device (142) comprises one or more tensioning devices (144), by means of which the transport element (135) can be tensioned depending on the forces caused by the transport in the transport direction (110) and by the influence on the rotational orientation.

15. The processing apparatus (100) according to claim 14, wherein each transport element (135) is itself individually tensioned.

16. The processing apparatus (100) according to claim 13, wherein the compensation device (142) comprises a measuring device for ascertaining a change in length of one or both transport elements (135).

17. The processing apparatus (100) according to claim 11, characterized in that the transport device (108) comprises at least one protective element (152) which, for the purpose of protecting the transport element (135), protrudes at least partially out of the inner cavity of the guide profile (132) for guiding the transport element (135).

18. The processing apparatus (100) according to claim 17, wherein the at least one protective element is a splash plate (154).